I have decided to give Tanaka another shot. For a while I have been interested in a 40cc trimmer (the TBC-420PF) in particular. However I have been way skeptical because about two years ago I bought a TBC-2510 on Ebay. My whole experience with this trimmer was negative. First it arrived with a trimmer shaft meant for a different model. Then, when I finally did get the right shaft from the seller, I could not get the brain trimmer head working to save my life. So finally (fed up with dealing with this piece of $h*% seller) I just went down to the nearest tanaka dealer and bought a regular bump head. After I got the thing completely assembled with some decent .95 commercial trimmer line, I went out to cut with it for the first time. It was the strangest thing that I have ever felt in my life. It seemed to cut the grass alright and I had the right amount of line out but at the same time it was completely powerless. Or at least that is what I concluded the problem was because I cannot even begin to describe it differently. I have used a couple different trimmer brands and I know that once you are used to one, it can be hard to get a feel for a different brand but I am sure that was not the issue. I have got to ask if anyone else has experienced something like this with any trimmer. And for those of you that have used Stihl, Redmax, Eco ect. and then tried a Tanaka, did you feel like this at all when first using the trimmer? By the way, this is not the first time I have bought a worthless item on Ebay and I have sworn to never use that sight again.